Walker tried to break up a double play in the eighth inning by sliding into second base but Cardinals shortstop Pete Kozma stepped on his hand while recording the out.

MLB.com reported that it will likely be a week before the stitches are removed but could be longer before Walker is ready to resume baseball activities. It is not clear if he will go on the disabled list.

Walker was wearing a bandage around his right hand and had blood stains on his uniform pants after the game.

"It was very, very deep -- the deepest cut I've ever had for stitches," Walker said. "I'm not excited that it happened, but I do feel fortunate that there was no damage to tendons or bone or issues like that."